| Domašín | |
| Settlement Type: | Municipality |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | Ústí nad Labem |
| Subdivision Type2: | District |
| Subdivision Name2: | Chomutov |
| Pushpin Map: | Czech Republic |
| Pushpin Relief: | 1 |
| Pushpin Map Caption: | Location in the Czech Republic |
| Coordinates: | 50.4208°N 13.1722°W |
| Established Title: | First mentioned |
| Established Date: | 1431 |
| Area Total Km2: | 15.80 |
| Elevation M: | 568 |
| Population As Of: | 2024-01-01 |
| Population Footnotes: | [1] |
| Population Total: | 194 |
| Population Density Km2: | auto |
| Timezone1: | CET |
| Utc Offset1: | +1 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 431 51 |
Domašín (German: Tomitschan) is a municipality and village in Chomutov District in the Ústí nad Labem Region of the Czech Republic. It has about 200 inhabitants.
Domašín lies approximately 17km (11miles) west of Chomutov, 67km (42miles) west of Ústí nad Labem, and 97km (60miles) north-west of Prague.
The villages and hamlets of Louchov, Nová Víska and Petlery are administrative parts of Domašín.